package sk.uniba.fmph.asdf.utils;

import java.io.File;

/**
 * Pomocna trieda uchovavajuca pripony obrazkovych suborov
 * 
 * @author Jakub Gaľ
 */
public class FileExtensions {

	public final static String jpeg = "jpeg";
	public final static String jpg = "jpg";
	public final static String gif = "gif";
	public final static String tiff = "tiff";
	public final static String tif = "tif";
	public final static String png = "png";

	/**
	 * Vrati priponu zadaneho suboru
	 * 
	 * @param f - subor, ktoreho priponu zistujeme
	 * @return String - pripona
	 */
	public static String getExtension(File f) {
		String ext = null;
		String s = f.getName();
		int i = s.lastIndexOf('.');

		if (i > 0 && i < s.length() - 1) {
			ext = s.substring(i + 1).toLowerCase();
		}
		
		return ext;
	}
}
